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HP Tuners for DFM Delete/Disable?

SPASierra

By SPASierra
in Modifications, Wheels & Tires

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SPASierra Enthusiast

SPASierra

Posted
Posted

Has anyone here purchased and used HP tuners for disabling DFM?  There are some YT videos on it, but they all seem to be for pre 2019 models.  The HP Tuners website lists the 19-21 5.3 as a programmable option, but doesn't say what can be programmed.  I am going to reach out to HP Tuners when I get a chance, but figured I would check to see if anyone of you have done this.

BRPRacer New Member

BRPRacer

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Posted (edited)

You have to send the ECU to HPTuners to be permanently unlocked before any tuning can be done. But once that is done you can turn in or off just about every function in the ecu. 

Edited by BRPRacer
SPASierra Enthusiast

SPASierra

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10 hours ago, BRPRacer said:

You have to send the ECU to HPTuners to be permanently unlocked before any tuning can be done. But once that is done you can turn in or off just about every function in the ecu. 

Thanks BRPRacer!  I was doing some reading through their forums, and it appears that once unlocked, the dealer can no longer reflash the ECU.  I'm not sure that is a route I want to take while under warranty.  Maybe the Pulsar LT is a better option for me.  I have a Range AFM/DFM disabler, but I have kicked it loose a couple of times and the case is separating from the plug.  I want something that is out of the way.  For the price of the Range I have broken, buying another one already puts me in Pulsar territory and I get more functionality.  I think that is probably my best route.

TNTSierra Senior Enthusiast

TNTSierra

Posted
Posted (edited)

^^^^^WITH ABOVE STATEMENT^^^^^^

 

Do people read for comprehension on this site?  He already stated he had the Range device! He also stated that he has hit it a few times with his leg getting in and out of the vehicle.

 

 

 unreal bill hader GIF by Saturday Night Live

Edited by TNTSilverado
  • Haha 1
Nick__ Enthusiast

Nick__

Posted
Posted
On 2/3/2022 at 8:54 AM, SPASierra said:

Thanks BRPRacer!  I was doing some reading through their forums, and it appears that once unlocked, the dealer can no longer reflash the ECU.  I'm not sure that is a route I want to take while under warranty.  Maybe the Pulsar LT is a better option for me.  I have a Range AFM/DFM disabler, but I have kicked it loose a couple of times and the case is separating from the plug.  I want something that is out of the way.  For the price of the Range I have broken, buying another one already puts me in Pulsar territory and I get more functionality.  I think that is probably my best route.

I would absolutely recommend the Pulsar LT. I adjusted my throttle response, increased the speed limiter, adjusted speedo for tire size and disabled DFM on my 6.2. Drives like it should have from the factory. If you use the chat function on Realtruck.com, they'll give you a better price than what's listed and they price match. I got mine for around $430 before tax.

  • 3 weeks later...
SPASierra Enthusiast

SPASierra

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Posted

Thanks Nick.  I ended up ordering and installing the Pulsar a couple of weeks ago.  Wow, what a difference!  All I can say now is that I am suspect that the AFM/DFM disabler was ever really working.  (at least after I kicked it loose the first time). This thing definitely made it run like it should have from the factory.  I didn't even bother adjusting the throttle response.  I disabled auto stop/start, disabled DFM, and bumped the speed limiter a bit.

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